Depositional environments of the Miocene sediments in northern Song Hong basin

Northern Song Hong Tertiary Sedimentary basin is a classic case study of pull-apart in southeast Asia, whose formation was controlled by the India-Eurasia collision, sinistral and dextral strike-slip motion Ailao Shan-Red River Shear Zone Opening East Vietnam Sea during Cenozoic. Unlike central southern parts basin, northern Basin experienced very strong inversion Late Miocene. This rapid uplift region has led to significantly change lithofacies sedimentary environments, which are now still poorly understood. uncertainty considered one main challingings prediction non-structural traps region. The recent results derived from well logging 2D/3D seismic interpretation allowed us define Miocene subdivided into three substrata, namely: Lower, Middle Upper stratum, characterized typical characteristics lithology depositional environments. Lower dominated deltaic environment at bottom, transitioning overlying shelf environment. Lithology section varies coarse-grained sediment (sandstone) fine grained material such as shale mudstone upward; stratum demonstrate sandier, coalic materials delta plain front environments intercalated with swampy shale. In contrast, more fluvial nearshore elements. It illustrated presence channel-filled sand bodies mouth/longshore bars. These good porosity horizontal permeability, be potential reservoir for both structural formation.